Screw & Barrel for Injection Machine

Short Description:

We can manufacture all kinds of screws and barrels for injection molding machine!
For inquiry, please send us diameter and length(or L/D) of screw, outer diameter of barrel.

  • Transportation: By Air, Sea, Express, Train, Truck
  • Payment Terms: T/T, Western Union, PayPal
  • Document: Certificate, Transportation bill
  • Production time: 18 to 30 days
  • Product Detail

    Function of screw and barrel. Conveying, compaction, melting, mixing and injecting plastic. All of these procedures are done through the rotation of the screw in the barrel.

    Consist of screw and barrel. Generally screw and barrel for injection molding machine include screw, screw tip, thrust ring, seal ring, barrel, end cap, nozzle.


    Material of screw and barrel

    Generally, screws and barrels made of 38CrMoAlA (JIS SACM645) steel are used for processing most kinds of plastic, like PP, PE, ABS, PS, PA, etc. 38CrMoAl is a high-grade nitriding steel, which has very good quality of wear resistance and fatigue strength. After nitriding, the hardness of screw and barrel is around 900-1000HV. We have a lot size of raw material in stock.


    Technical Parameter:
    Hardness After Hardening & Tempering: HB280-320
    Nitrided hardness: 950-1100HV
    Nitrided layer depth:0.50-0.80mm
    Nitrided brittleness: Less than 2 level
    Surface roughness: Ra 0.4μm
    Linearity of screw: 0.015mm/m
    Bimetallic layer depth: ≥3mm
    Bimetallic hardness: HRC60-72
    Hard-chrome plating hardness after nitriding: ≥950HV
    Chrome-plating layer depth: 0.025~0.10mm.

    Hard chrome plating
    High-frequency quenching
    Alloy powder spray welding

    Inspection.  Every screw and barrel will be inspected before delivery.


    Injection molding machine brands, List below are the most popular brands screws and barrels we offer, we have thousands of drawings of screws and barrels.

    Arburg Battenfeld BOLE Borche Boy Chen De Chen Hsong Cincinnati
    DEMAG Engel Fanuc Fu Chun shin Golden Eagle Hai da Haitai Haitian
    Haixiong Husky Hyundai Jonwai JSW Kai Ming Li guang LS
    Nissei NPC Sandretto Sumitomo TMC TOP FINE Welltec Yizimi

    Customsize service. We can offer customized screws and barrels for your demands.
    Design service. We can offer design service for increasing or decreasing the shot volume, improving the performance of mixing, improving the performance of plasticization, processing another kinds or plastic, or other purposes.
    Measurement service. We can offer measurement service globally.

    Package. Oiling screw and barrel, then covered with stretch film, packed in wooden case.


    Five Steps to place an order:  
    Step 1. Inquiry.
    Send us diameter and length(or L/D) of screw, outer diameter of barrel.
    For screw of Chinese injection machine, please send us the machine model and diameter of screw(We have a lot of drawings for screw of injection machine).
    If you have drawing or draft, please send us! That will save a lot of your time!     
    Step 2. Quotation & Contract
    Our manager will send you a quotation.
    After confirming the quotation by you, we will send you invoice and contract for payment.    
    Step 3. Drawing
    Our specialist will design drawings and send you for confirming.
    Drawings are made by Auto CAD.
    Step 4. Production
    Production time from 18 to 30 days, depend on complexity of screw and barrel.
    Step 5. Inspection & Delivery
    After production we will check the hardness and size, send you photos of screw and barrel.
    With rich experiences in shipment we can offer the best delivery plan for you.

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